Mark Dennis is a software developer at QNX Software Systems in Ottawa, Canada and member of the team working on the AIR SDK for the Blackberry PlayBook and future Blackberry devices. Mark’s previous work experiences span systems for predicting tsunamis on Canada’s Atlantic coast and being credited as a software engineer on half a dozen video games that in total sold over five-million copies worldwide while working at Electronic Arts Canada and HB Studios. His interests lie in human computer interaction, especially on non-desktop computer devices, and algorithm design and analysis.